md.c:didn't unlock the mddev before return EINVAL in array_size_store

Zhilong Liu · shligit · commit b670883bb9e5 · 2017-04-10T10:50:24.000-07:00
md.c: it needs to release the mddev lock before the array_size_store() returns. Fixes: ab5a98b ("md-cluster: change array_sectors and update size are not supported") Signed-off-by: Zhilong Liu <zlliu@suse.com> Reviewed-by: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
diff --git a/drivers/md/md.c b/drivers/md/md.c
@@ -4950,8 +4950,10 @@ array_size_store(struct mddev *mddev, const char *buf, size_t len)
 		return err;
 
 	/* cluster raid doesn't support change array_sectors */
-	if (mddev_is_clustered(mddev))
+	if (mddev_is_clustered(mddev)) {
+		mddev_unlock(mddev);
 		return -EINVAL;
+	}
 
 	if (strncmp(buf, "default", 7) == 0) {
 		if (mddev->pers)
